Sometimes, it's simply easier to open a Subversion command line client and take a look at that. I suggest that you install a command line client, go to the directory, and do a svn status. I would also look at svn info on the various directories and files and make sure they're all on the same working directory. (You can do a svn status -v to get that information).
My feeling is that the target directory should not be added or have been added to your project. This directory in Maven is used for built objects which should not be committed into your Subversion repository. Even many Ant build scripts follow Maven in this.
So, what is the status of the target directory? What happens when you do an update on the directory before committing your changes? (I believe it's Team->Update).